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Hectopascals to Centimeters of Water Converter

hPa → cmH₂O: type a value and the result appears instantly.

1 hPa = 1.019716213 cmH₂O
1 cmH₂O = 0.980665 hPa
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How to convert hectopascals to centimeters of water

Use this formula:

cmH₂O = hPa × 1.019716213

Examples

hPa to cmH₂O conversion chart

hectopascals (hPa)centimeters of water (cmH₂O)
0.1 hPa0.101972 cmH₂O
0.25 hPa0.254929 cmH₂O
0.5 hPa0.509858 cmH₂O
1 hPa1.01972 cmH₂O
2 hPa2.03943 cmH₂O
3 hPa3.05915 cmH₂O
4 hPa4.07886 cmH₂O
5 hPa5.09858 cmH₂O
6 hPa6.1183 cmH₂O
7 hPa7.13801 cmH₂O
8 hPa8.15773 cmH₂O
9 hPa9.17745 cmH₂O
10 hPa10.1972 cmH₂O
12 hPa12.2366 cmH₂O
15 hPa15.2957 cmH₂O
20 hPa20.3943 cmH₂O
25 hPa25.4929 cmH₂O
30 hPa30.5915 cmH₂O
40 hPa40.7886 cmH₂O
50 hPa50.9858 cmH₂O
60 hPa61.183 cmH₂O
70 hPa71.3801 cmH₂O
75 hPa76.4787 cmH₂O
80 hPa81.5773 cmH₂O
90 hPa91.7745 cmH₂O
100 hPa101.972 cmH₂O
150 hPa152.957 cmH₂O
200 hPa203.943 cmH₂O
250 hPa254.929 cmH₂O
500 hPa509.858 cmH₂O
1,000 hPa1,019.72 cmH₂O

About the units

Hectopascal (hPa) is a metric (SI) unit. 1 hPa = 100 Pa.

Centimeter of water (cmH₂O) is a commonly used unit. 1 cmH₂O = 98.0665 Pa.

Frequently asked questions

How do I convert hectopascals to centimeters of water?
Multiply the value in hPa by 1.019716213.
How many centimeters of water are in 1 hectopascal?
1 hPa = 1.019716213 cmH₂O.
What is 12 hPa in cmH₂O?
12 hPa = 12.2366 cmH₂O.
How do I convert centimeters of water to hectopascals?
Use the reverse converter: cmH₂O → hPa.

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Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters